Abstract: A projection type lensmeter in which the target image for measuring the refractive power of a lens is projected on a screen and the projected image is magnified and observed through a magnifying observation optical system including a collimator lens having a focal length f.sub.1 adapted to collimate light projected from the target image, and a projection lens having a focal length f.sub.2 adapted to project light from the target image to the screen. The magnifying observation optical system has an effective diameter .phi. and a magnification m.sub.2. The focal lengths f.sub.1 and f.sub.2, the effective diameter .phi., and the magnification m.sub.2 satisfy the following relations:25 mm.ltoreq.f.sub.1 .ltoreq.30 mm409 mm.ltoreq.f.sub.2 .ltoreq.600 mm60 mm.ltoreq..phi..ltoreq.70 mm1.25.ltoreq.m.sub.2 .ltoreq.1.83.The overall magnification of the lensmeter is 30 or greater.